No java virtual machine was found in Eclipse [duplicate]-Collection of common programming errors

Possible Duplicate:
Eclipse – no Java (JRE) / (JDK) … no virtual machine

I am trying to get Eclipse Indigo to re-Start on my computer – i have run it before with no problems but now i getting error like this;

A java Runtime Environment (JRE) or Java Development kit (JDK) must be available in order to run Eclipse. No Java virtual machine was found after searching the following locations: C:\eclipse\jre\javaw.exe javaw.exe in your current PATH

How can i rectify this problem?